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` W. GILFILLAN.

. IIIIIIIIIII y l Patented July 19,1881;

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1W. GILPIL'LAN. n

SPRING HINGE.

110.244.584. 1=111m11ed11u1y19,1881.

ll'NI-TED STATES .PATENT OFFICE.

` VlLLlAM GILFILLAN, OF BROOKLYN, NEW YORK.

" 1 .sPRlNe-HlNei-i.

- SPECFICATION'forrning part of Letters Patent No. 244,584, dated July 19, 1881.

Application filed May 14, 1881. (Model.) f

To all whom it 'may concern Brooklyn, in the county of Kings and Sta-te'of New York, have invented certain new and useful Improvements in Spring-Hin ges; and I do hereby declare that the following is'a full, clear, and exact description thereof. 4

My invention relates to hinges of the class used in connection with self-closing doors, and

commonly termed spring-hinges 5 and its object is to produce a simple, efficient, and compact device consisting of few parts, rendering it cheap to manufacture, easily operated, and little liable to get out of order or to need repair. My invention consistsin the peculiarities of construction and in the various operative combinations of the parts which compose i-t, as will be fully hereinafter described and claimed.

In the drawings, Figure 1 represents an elevation ofthe hinge; Fig. 2, a plan view; Fig. 3, a sectional view; Fig. 4, the pintle; Fig. 5, a transverse section.

A'represents the post, frame, or sill to which the door B is connected by the spring-hinge. On the edges of the door and post, and situated respectively thereon opposite one another, are

screwed the metal plates 1 2, of substantially similar construction, and such plates .are provided with the ordinary cylindrical lugs, 3 3, bored out centrally to receive a rod, 4, which` forms the pivot on which theV connected parts move. Upon the plate 1 are two projections, 5, forming a bearing, as hereinafter described, and opposite this bearing the plate 2 and the door-post are cut away, as at 6, in order to allow the edges .of the door and post to meet squarely when the door is closed, the projections 5 entering such opening. The upper pintle-eye, 3, of the series carried by the plate 1 is provided with a slot, 7, as shown.

The metallic plate 2, attached to the edge of the post B, has cast with it two brackets, 8 9,

' the lower of which', 8, is bored out cylindrically, while an opening of smaller bore, 10, is formed inthe bracket 9. The end ofthe pintle 4 also passes through a hole, 11, in the bracket 9, and, being screw-threaded, is provided with a thimble, 12, which keeps it in place. The

brackets 8 and 9form the bearings for the rod which holds the spring and its inclosing-cylinder.

The connection between the spring carried on the door-post and the swinging'dooris made by a jointed connection, represented `as a whole by D. Between the bearings 5 5 ishinged an arm, 13, to which is jointed an arm, 14, and to the arm 14 is pivoted a bracket, 15;" The parts 13 1415 move freely vupon one another and form. a jointed connection. `Gast with the bracket 15 is a tubular extension, 16, bored out cylindrically, as shown, and a stop, 17, for a purpose hereinafter to be described.

The spring E is inclosed within a cylinder,

' F,and is an ordinary steel spiral of any desired strength. One end of the spring projects outside the case, as `at 1S, while the other is bent inwardly, as shownat 19; The cylinder which contains the spring is held in position between 4the bracket 8 on the door-post and thetubula'r extension 16of the jointed arm D, andthe fastening device .is 4the peculiar pintle (shown separate in Fig. 4) which passes through the bracket 8, the tubular extension 16, and the upper bracket, 9, and thus holds the 4spring in position, the part 16 entering the hollow cas-- ing or cylinder F.

The pintle Gcon'sists of a metallic rod, screw threaded at the upper end to'receive a cap, beA low which it is cylindrical for a short distance. Below this cylindrical portion are three radial ribsor feathers, 20, extending longitudinally, forming triangular grooves. At the end of vthese grooves the rod becomes cylindrical and of larger diameter, as at 21, and is provided,

with a deep slot or recess, 22, situated at the end, and forming a continuation of one of the longitudinal triangular 'grooi'es The cylindrical -portion 21 terminates in a shoulder, 23, which rests on the lower side ot' the bracket 8 when the parts are in position. The spring is held in position insuch a manner that the projecting end 18 bears on the stop 17, while the bent end 19 slides through the groove on the pintle, when the latter is inserted, and entersA the slot 22. A row of holes, 24, is .made in the lower end of the pintle, and a similar row, 25,

in the cylindrical portion 21, while a single perforation, 26, is drilled inthe side of the bracket 8.` Y l It is evidentthat as the upper end of the spring bears on the rigid stop 17 while theA lower end is held in the recess 22 the turning of the pintle in one direction will coil the sprin g closer, increasing its power, and that. it mayr he held at any desired tension hy a pin inserted through the perforation 26 when made to register with any desired hole, 25, in the pintle.

The pintle is conveniently turned by a lever inserted in any one of the holes 24. This inode ot' adjusting, regulating, and preserving the tension oi' the operatingspring is one of the most iniportantfeatnres of my invention.

The operation of my device will be readily understood. The spring Vbeing adjusted t proper tension, the act of pushing open the door will turn the pintle and coil the spring closer. The parts composing,` the jointed arm D move on their several bearings, the adjoinin g parts being cut away, as before described, to give them play. The release of the door allows the spring` D to exert its force and close it.

By changing the position of the spring slightly the device might be made so that the jointed arm might he broughtto the dead-point, so that the spring could have no leverage through which to transmit its force, and the door would then remain open at its widest extent, and the modification necessary to aecomplish this is within the spirit ot my invention.

As thus constructed, my device is exceedingly neat, compact, and convenient, and possesses advantage which will he evidentv to those skilled in the art.

What I claim is@ 1 The combination of the plates 1 2, situated respectively on the door and post, the pintle eyes 3 3, the recess 6, the slot 7, and the jointed arm D, substantially as described.

2. In a spring-hinge, the combination of the plate having supporting brackets 8 9, the spring E, and the arm D, composed of the joints 13 14 15pivoted to eachother, and connected at one end to the door and at the other to the spring, substantially as described.

3. The combination of the plate 1, attached to the swinging door, and-having lugs orhearings 5 5, with the plate 2 on the door-post, having the recess 6and with the jointed connecting-arms 13 14 15, substantially as described.

4. In combination, the coil-spring E, the brackets S 9 on the door-post, the jointed eonnection D, having the tubular portion 16 eX- tending into snc-h spring and connected to the door, and the pintle G, passing thronghsuch brackets, spring, and tubular portion, substantially as described.

In testimony whereotI have hereunto set my hand this th day of May, 1881.

WILLIAM GILFILLAN.

In presence of- G. B. RIDE, W. 0. NEEDHAM. 

